Carrier for pneumatic-despatch-tube apparatus.



PATBNTED JAN. 29, 1907.

0- F. STODDARD. CARRIER FOR PNEUMATIC DBSPATGH TUBE APPARATUS.

APPLIOATION FILED MAY'20. 1904.

2 SHEETS-SHEET 1.

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PATENTED JAN. 29, 1907.

C. F. STODDARD. CARRIER FOR PNEUMATIC DESPATGH TUBE APPARATUS.

APPLIOATION FILED MAY 20. 1904.

2 SHEETS-SHEET 2.

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uniran STAT S PATENT ornion.

CHARLES r. STODDARD, OFBOSTON, MASSACHUSETTS, ASSIGNOR TO AMER ICANPNEUMATIC SERVICE COMPANY, or DOVER, DELAWARIQ'A con- PORATION OFDELAWARE.

CARRIER FOR PNE'UIVIATlC-DESPATCH-TUBE APPARAT S.

Specification of Letters Patent.

Application filed May 20,1904. Serial No. 208,812.

To (LZZ whom it may concern: I I

Beit known that 1, CHARLES F. STODDARD, of Boston, in the county ofSuilolk and State of Massachusetts, have invented certain newv anduseful Improvements in Carriers for Pneumatic Despatoh Tube Apparatus,of which the following is a specification.

My invention relates to certain new and useful improvements incarrier-locks for pneumatic-despatch apparatus, and especially tocarriers for large-sized tubes for carrying inailmatter, merchandise,and the like.

The object of my invention is to produce a lock which is simple inconstruction and will not allow the cover to open after the carrier isinserted into the tube. I

My invention consists of certain novel features hereinafter described,and particularly pointed out in the claims.

In the accompanying drawings, which illustrate a construction embodyingmy invention, Figure 1 is an end elevation of the inner end of thecarrier, showing the cover and the locking mechanism in their normallocked positions. Fig. 2 is a similar viewoi' the car rier and cover,but-showing the safety lever swung out. cover and carrier, but showingthe parts in their unlocked position. Fig. 4 is a sectional view ontheline X Y -Z,Fig. 3, through. one end of the carrier and showingtheparts of the locking device unlocked, as shown in Fig. 3. Fig. 5 is asectionalview on the line X Y Z, Fig. 1, Showing the parts of the looking device in theirlocked position, as in Fig. 1.

Like letters of reference refer to like parts throughout the severalviews.

A represents the shell of a carrier, the top of which is reinforcedbythe band A". To the shell A by means of the hinge A is pivoted the coverA The upper portion of the cain-bolt A is securely fastened to the leverA at A in such a way that the cam-bolt A may be swung around by thelever A safety-lever A is pivotally connected to the cover A at A insuch away that it can swing freely about the pivot. The portions of thelocking-lever A and the safety-lever A7 immediately around their pivotsare shaped so as to fornianinterlocking device, so that it is possibleto swing the lever A onlywhen the Fig. 3 is a similar view of the.

Fig. 1.. This safety-lever The lever A is in the position shown in Fig.3 and only possible to swing the safety-lever A is in the position shownin when the lever A Fig. l.

The cam portion B of the. cam-bolt A is shown by dotted lines in Figs.1, 2, and 3. It is so shaped that the. side B will not extend into theslot B 'in the shell A when said cambolt A is in theposition shownin'Figs. 4L and 3,in which position the cover A is not locked to theshell A. When the cam-bolt A is swung into the position shown in Figs. 1and 5, the cam portion B extends into the slot B B of the shell A andthe cover A respectively, and also extends through the slot B in thereinforcing-plate A, Fig. 5.

In Fig. 3, which shows the locking parts in their positions when thecover A is not locked to the Shell A, it will be seen that the lever Acan be freely moved into the position shown A and the concave roundingportion C of Patented Jan. 29,1907.

the lever A are concentric with the pivot A,

upon which the lever A swings; This arrangeinent makes it impossible toswing the safety-lever A into the positionshown in Fig. 1. until thelever'A is swung into the position shown in Fig. 2, which bringstheConcave'rounding portion 0 of the lever A concentric with the pivot Aupon which the safety-lever A swings. The convex rounding portion C ofthe safety-lever A is concentric with the pivot A upon which thesafety-lever A swings, and constructed to mesh with the concave roundingportion C of the lever A when said lever A is in the posi tion showninFig. 2, so that it is possible with the lever A in this position, Fig.2,'to swing the safety-lever A into the osition shown in 7 is pivotednear the periphery of the cover A3, so that'when it is swung into theposition shown in Fig. 3

it extends beyond the circumferential limits 1 of the carrier andmakesit impossible to insert the carrier into the transmission-tube andalso makes it impossible for the lever A to be swung from the positionshown in Fig. l to that shown in Fig. 2 while the carrier is in'thetransmission-tube.

ioc

As before explained, when the cover A is unlocked from the shell A theparts are in the position shown in Fig. 3 and the cycle of operation ofthe lock is as follows: The coverv position of the lever A is reached.Then the safety-lever A is swung into the position shown in Fig. 1,leaving the carrier locked and ready for transmission. As beforeexplained, when the lever A is swung from the position shown in Fig. 3to that shown in Fig. 2 the cam-bolt A, being securely fastened thereto,swings with the lever A and the cam portion B swings into the slots B BB. The button D is riveted to the cover A in such a position that whenthe safety-lever A is swung into the position shown in Fig. 1 it springsover the same and is held in that position. In unlocking cover it isnecessary to swing the safety-lever A from the position shown in Fig. 1into that shown in Fig. 2 before the lever A can be moved from theposition shown in Fig. 1 to that shown in Fig. 3,

because the convex rounding portion C of the safety-lever A is meshedwith the concave rounding portion C of the lever A After thesafety-lever A is swung from the position shown in Fig. 1 to that shownin Fig. 2 the lever A is swung from the position shown in Fig. 1 to thatshown in Fig. 3, and thereby locks the safety-lever A into the positionshown'in Fig. 3, because the convex rounding portion C of the lever A ismeshed with the concave rounding portion C of the safety-lever A Theshoulder S on the safety-lever A limits the motion of the safetylever Awhen it is swung from the position shown in Fig. 2 to that shown inFig. 1. When the safety-lever A is swung from the position shown in Fig.1 to that shown in Fig.

2, the portion S engages the shoulder S of the lever A thereby limitingthe swing of the safety-lever A in this direction. The motion of thelever A in swinging it from the position shown in Fig. 2 to that shownin Fig. 3 is limited by the portion S engaging the convex roundingportion C of the safety-lever A I do not limit myself to the arrangementand construction shown, as the same may be varied without departing fromthe spirit of my invention.

Having thus described the nature of my V invention and set forth aconstruction embodying the same, what I claim as new, and

desire to secure by Letters Patent of the United States, is-

1. In a carrier for pneumatic-despatchtube apparatus, a shell, a coverhinged to said shell, a bolt for locking said cover to the shell, apivoted member for operating said bolt and a second pivoted member forsecuring the first-mentioned pivoted member,

each of said pivoted members having a surface concentric with its ownpivotal point and a surface concentric with the pivotal point of theother member and said pivoted members operating so that neither can beturned except when concentric surfaces reg ister with each other.

2. In, a carrier for pneumatic-despatchtube apparatus, a shell, a coverhinged to said shell, a bolt for locking said cover to the shell, apivoted lever for operating said bolt, and a safety-lever pivoted onsaid cover; each of said levers having a surface concentric with itspivotal point and a surface con centric with the pivotal point of theother lever, and said levers operating so that neither can be turnedexcept when concentric surfaces register with each other.

3. In a carrier for pneumatic-despatchtube apparatus, a shell, a coverhinged to said shell, a bolt for locking said cover to the shell, apivoted member for operating said bolt and having a curved surfaceconcentric with its pivotal point, and a second pivoted member having acurved surface concentric with the pivotal point of the pivoted memberfor operating the bolt; and said pivoted members operating so that theboltoperating member cannot be turned except when the two concentricsurfaces register with each other.

4. In a carrier for pneumatic-despatchtube apparatus, a shell, a coverhinged to said shell, a bolt for locking said cover to the shell, andmechanism for securing said bolt comprising two pivoted members with oneof

